src/redis.h

   1 #ifndef __REDIS_H
   2 #define __REDIS_H
   3
   4 #include "fmacros.h"
   5 #include "config.h"
   6
   7 #if defined(__sun)
   8 #include "solarisfixes.h"
   9 #endif
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include <time.h>
  15 #include <limits.h>
  16 #include <unistd.h>
  17 #include <errno.h>
  18 #include <inttypes.h>
  19 #include <pthread.h>
  20 #include <syslog.h>
  21 #include <netinet/in.h>
  22 #include <lua.h>
  23
  24 #include "ae.h"      /* Event driven programming library */
  25 #include "sds.h"     /* Dynamic safe strings */
  26 #include "dict.h"    /* Hash tables */
  27 #include "adlist.h"  /* Linked lists */
  28 #include "zmalloc.h" /* total memory usage aware version of malloc/free */
  29 #include "anet.h"    /* Networking the easy way */
  30 #include "zipmap.h"  /* Compact string -> string data structure */
  31 #include "ziplist.h" /* Compact list data structure */
  32 #include "intset.h"  /* Compact integer set structure */
  33 #include "version.h" /* Version macro */
  34 #include "util.h"    /* Misc functions useful in many places */
  35
  36 /* Error codes */
  37 #define REDIS_OK                0
  38 #define REDIS_ERR               -1
  39
  40 /* Static server configuration */
  41 #define REDIS_SERVERPORT        6379    /* TCP port */
  42 #define REDIS_MAXIDLETIME       0       /* default client timeout: infinite */
  43 #define REDIS_IOBUF_LEN         (1024*16)
  44 #define REDIS_LOADBUF_LEN       1024
  45 #define REDIS_DEFAULT_DBNUM     16
  46 #define REDIS_CONFIGLINE_MAX    1024
  47 #define REDIS_MAX_SYNC_TIME     60      /* Slave can't take more to sync */
  48 #define REDIS_EXPIRELOOKUPS_PER_CRON    10 /* lookup 10 expires per loop */
  49 #define REDIS_MAX_WRITE_PER_EVENT (1024*64)
  50 #define REDIS_REQUEST_MAX_SIZE (1024*1024*256) /* max bytes in inline command */
  51 #define REDIS_SHARED_INTEGERS 10000
  52 #define REDIS_REPLY_CHUNK_BYTES (16*1024) /* 16k output buffer */
  53 #define REDIS_MAX_LOGMSG_LEN    1024 /* Default maximum length of syslog messages */
  54 #define REDIS_AUTO_AOFREWRITE_PERC  100
  55 #define REDIS_AUTO_AOFREWRITE_MIN_SIZE (1024*1024)
  56 #define REDIS_SLOWLOG_LOG_SLOWER_THAN 10000
  57 #define REDIS_SLOWLOG_MAX_LEN 64
  58 #define REDIS_MAX_CLIENTS 10000
  59
  60 #define REDIS_REPL_TIMEOUT 60
  61 #define REDIS_REPL_PING_SLAVE_PERIOD 10
  62 #define REDIS_MBULK_BIG_ARG (1024*32)
  63
  64 /* Hash table parameters */
  65 #define REDIS_HT_MINFILL        10      /* Minimal hash table fill 10% */
  66
  67 /* Command flags. Please check the command table defined in the redis.c file
  68  * for more information about the meaning of every flag. */
  69 #define REDIS_CMD_WRITE 1                   /* "w" flag */
  70 #define REDIS_CMD_READONLY 2                /* "r" flag */
  71 #define REDIS_CMD_DENYOOM 4                 /* "m" flag */
  72 #define REDIS_CMD_FORCE_REPLICATION 8       /* "f" flag */
  73 #define REDIS_CMD_ADMIN 16                  /* "a" flag */
  74 #define REDIS_CMD_PUBSUB 32                 /* "p" flag */
  75 #define REDIS_CMD_NOSCRIPT  64              /* "s" flag */
  76 #define REDIS_CMD_RANDOM 128                /* "R" flag */
  77
  78 /* Object types */
  79 #define REDIS_STRING 0
  80 #define REDIS_LIST 1
  81 #define REDIS_SET 2
  82 #define REDIS_ZSET 3
  83 #define REDIS_HASH 4
  84 #define REDIS_VMPOINTER 8
  85
  86 /* Objects encoding. Some kind of objects like Strings and Hashes can be
  87  * internally represented in multiple ways. The 'encoding' field of the object
  88  * is set to one of this fields for this object. */
  89 #define REDIS_ENCODING_RAW 0     /* Raw representation */
  90 #define REDIS_ENCODING_INT 1     /* Encoded as integer */
  91 #define REDIS_ENCODING_HT 2      /* Encoded as hash table */
  92 #define REDIS_ENCODING_ZIPMAP 3  /* Encoded as zipmap */
  93 #define REDIS_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
  94 #define REDIS_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
  95 #define REDIS_ENCODING_INTSET 6  /* Encoded as intset */
  96 #define REDIS_ENCODING_SKIPLIST 7  /* Encoded as skiplist */
  97
  98 /* Defines related to the dump file format. To store 32 bits lengths for short
  99  * keys requires a lot of space, so we check the most significant 2 bits of
 100  * the first byte to interpreter the length:
 101  *
 102  * 00|000000 => if the two MSB are 00 the len is the 6 bits of this byte
 103  * 01|000000 00000000 =>  01, the len is 14 byes, 6 bits + 8 bits of next byte
 104  * 10|000000 [32 bit integer] => if it's 01, a full 32 bit len will follow
 105  * 11|000000 this means: specially encoded object will follow. The six bits
 106  *           number specify the kind of object that follows.
 107  *           See the REDIS_RDB_ENC_* defines.
 108  *
 109  * Lenghts up to 63 are stored using a single byte, most DB keys, and may
 110  * values, will fit inside. */
 111 #define REDIS_RDB_6BITLEN 0
 112 #define REDIS_RDB_14BITLEN 1
 113 #define REDIS_RDB_32BITLEN 2
 114 #define REDIS_RDB_ENCVAL 3
 115 #define REDIS_RDB_LENERR UINT_MAX
 116
 117 /* When a length of a string object stored on disk has the first two bits
 118  * set, the remaining two bits specify a special encoding for the object
 119  * accordingly to the following defines: */
 120 #define REDIS_RDB_ENC_INT8 0        /* 8 bit signed integer */
 121 #define REDIS_RDB_ENC_INT16 1       /* 16 bit signed integer */
 122 #define REDIS_RDB_ENC_INT32 2       /* 32 bit signed integer */
 123 #define REDIS_RDB_ENC_LZF 3         /* string compressed with FASTLZ */
 124
 125 /* Client flags */
 126 #define REDIS_SLAVE 1       /* This client is a slave server */
 127 #define REDIS_MASTER 2      /* This client is a master server */
 128 #define REDIS_MONITOR 4     /* This client is a slave monitor, see MONITOR */
 129 #define REDIS_MULTI 8       /* This client is in a MULTI context */
 130 #define REDIS_BLOCKED 16    /* The client is waiting in a blocking operation */
 131 #define REDIS_DIRTY_CAS 64  /* Watched keys modified. EXEC will fail. */
 132 #define REDIS_CLOSE_AFTER_REPLY 128 /* Close after writing entire reply. */
 133 #define REDIS_UNBLOCKED 256 /* This client was unblocked and is stored in
 134                                server.unblocked_clients */
 135 #define REDIS_LUA_CLIENT 512 /* This is a non connected client used by Lua */
 136 #define REDIS_ASKING 1024   /* Client issued the ASKING command */
 137
 138 /* Client request types */
 139 #define REDIS_REQ_INLINE 1
 140 #define REDIS_REQ_MULTIBULK 2
 141
 142 /* Slave replication state - slave side */
 143 #define REDIS_REPL_NONE 0 /* No active replication */
 144 #define REDIS_REPL_CONNECT 1 /* Must connect to master */
 145 #define REDIS_REPL_CONNECTING 2 /* Connecting to master */
 146 #define REDIS_REPL_TRANSFER 3 /* Receiving .rdb from master */
 147 #define REDIS_REPL_CONNECTED 4 /* Connected to master */
 148
 149 /* Synchronous read timeout - slave side */
 150 #define REDIS_REPL_SYNCIO_TIMEOUT 5
 151
 152 /* Slave replication state - from the point of view of master
 153  * Note that in SEND_BULK and ONLINE state the slave receives new updates
 154  * in its output queue. In the WAIT_BGSAVE state instead the server is waiting
 155  * to start the next background saving in order to send updates to it. */
 156 #define REDIS_REPL_WAIT_BGSAVE_START 3 /* master waits bgsave to start feeding it */
 157 #define REDIS_REPL_WAIT_BGSAVE_END 4 /* master waits bgsave to start bulk DB transmission */
 158 #define REDIS_REPL_SEND_BULK 5 /* master is sending the bulk DB */
 159 #define REDIS_REPL_ONLINE 6 /* bulk DB already transmitted, receive updates */
 160
 161 /* List related stuff */
 162 #define REDIS_HEAD 0
 163 #define REDIS_TAIL 1
 164
 165 /* Sort operations */
 166 #define REDIS_SORT_GET 0
 167 #define REDIS_SORT_ASC 1
 168 #define REDIS_SORT_DESC 2
 169 #define REDIS_SORTKEY_MAX 1024
 170
 171 /* Log levels */
 172 #define REDIS_DEBUG 0
 173 #define REDIS_VERBOSE 1
 174 #define REDIS_NOTICE 2
 175 #define REDIS_WARNING 3
 176 #define REDIS_LOG_RAW (1<<10) /* Modifier to log without timestamp */
 177
 178 /* Anti-warning macro... */
 179 #define REDIS_NOTUSED(V) ((void) V)
 180
 181 #define ZSKIPLIST_MAXLEVEL 32 /* Should be enough for 2^32 elements */
 182 #define ZSKIPLIST_P 0.25      /* Skiplist P = 1/4 */
 183
 184 /* Append only defines */
 185 #define APPENDFSYNC_NO 0
 186 #define APPENDFSYNC_ALWAYS 1
 187 #define APPENDFSYNC_EVERYSEC 2
 188
 189 /* Zip structure related defaults */
 190 #define REDIS_HASH_MAX_ZIPMAP_ENTRIES 512
 191 #define REDIS_HASH_MAX_ZIPMAP_VALUE 64
 192 #define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
 193 #define REDIS_LIST_MAX_ZIPLIST_VALUE 64
 194 #define REDIS_SET_MAX_INTSET_ENTRIES 512
 195 #define REDIS_ZSET_MAX_ZIPLIST_ENTRIES 128
 196 #define REDIS_ZSET_MAX_ZIPLIST_VALUE 64
 197
 198 /* Sets operations codes */
 199 #define REDIS_OP_UNION 0
 200 #define REDIS_OP_DIFF 1
 201 #define REDIS_OP_INTER 2
 202
 203 /* Redis maxmemory strategies */
 204 #define REDIS_MAXMEMORY_VOLATILE_LRU 0
 205 #define REDIS_MAXMEMORY_VOLATILE_TTL 1
 206 #define REDIS_MAXMEMORY_VOLATILE_RANDOM 2
 207 #define REDIS_MAXMEMORY_ALLKEYS_LRU 3
 208 #define REDIS_MAXMEMORY_ALLKEYS_RANDOM 4
 209 #define REDIS_MAXMEMORY_NO_EVICTION 5
 210
 211 /* Scripting */
 212 #define REDIS_LUA_TIME_LIMIT 5000 /* milliseconds */
 213
 214 /* Units */
 215 #define UNIT_SECONDS 0
 216 #define UNIT_MILLISECONDS 1
 217
 218 /* We can print the stacktrace, so our assert is defined this way: */
 219 #define redisAssertWithInfo(_c,_o,_e) ((_e)?(void)0 : (_redisAssertWithInfo(_c,_o,#_e,__FILE__,__LINE__),_exit(1)))
 220 #define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))
 221 #define redisPanic(_e) _redisPanic(#_e,__FILE__,__LINE__),_exit(1)
 222
 223 /*-----------------------------------------------------------------------------
 224  * Data types
 225  *----------------------------------------------------------------------------*/
 226
 227 /* A redis object, that is a type able to hold a string / list / set */
 228
 229 /* The actual Redis Object */
 230 #define REDIS_LRU_CLOCK_MAX ((1<<21)-1) /* Max value of obj->lru */
 231 #define REDIS_LRU_CLOCK_RESOLUTION 10 /* LRU clock resolution in seconds */
 232 typedef struct redisObject {
 233     unsigned type:4;
 234     unsigned notused:2;     /* Not used */
 235     unsigned encoding:4;
 236     unsigned lru:22;        /* lru time (relative to server.lruclock) */
 237     int refcount;
 238     void *ptr;
 239 } robj;
 240
 241 /* Macro used to initalize a Redis object allocated on the stack.
 242  * Note that this macro is taken near the structure definition to make sure
 243  * we'll update it when the structure is changed, to avoid bugs like
 244  * bug #85 introduced exactly in this way. */
 245 #define initStaticStringObject(_var,_ptr) do { \
 246     _var.refcount = 1; \
 247     _var.type = REDIS_STRING; \
 248     _var.encoding = REDIS_ENCODING_RAW; \
 249     _var.ptr = _ptr; \
 250 } while(0);
 251
 252 typedef struct redisDb {
 253     dict *dict;                 /* The keyspace for this DB */
 254     dict *expires;              /* Timeout of keys with a timeout set */
 255     dict *blocking_keys;        /* Keys with clients waiting for data (BLPOP) */
 256     dict *watched_keys;         /* WATCHED keys for MULTI/EXEC CAS */
 257     int id;
 258 } redisDb;
 259
 260 /* Client MULTI/EXEC state */
 261 typedef struct multiCmd {
 262     robj **argv;
 263     int argc;
 264     struct redisCommand *cmd;
 265 } multiCmd;
 266
 267 typedef struct multiState {
 268     multiCmd *commands;     /* Array of MULTI commands */
 269     int count;              /* Total number of MULTI commands */
 270 } multiState;
 271
 272 typedef struct blockingState {
 273     robj **keys;            /* The key we are waiting to terminate a blocking
 274                              * operation such as BLPOP. Otherwise NULL. */
 275     int count;              /* Number of blocking keys */
 276     time_t timeout;         /* Blocking operation timeout. If UNIX current time
 277                              * is >= timeout then the operation timed out. */
 278     robj *target;           /* The key that should receive the element,
 279                              * for BRPOPLPUSH. */
 280 } blockingState;
 281
 282 /* With multiplexing we need to take per-clinet state.
 283  * Clients are taken in a liked list. */
 284 typedef struct redisClient {
 285     int fd;
 286     redisDb *db;
 287     int dictid;
 288     sds querybuf;
 289     int argc;
 290     robj **argv;
 291     struct redisCommand *cmd;
 292     int reqtype;
 293     int multibulklen;       /* number of multi bulk arguments left to read */
 294     long bulklen;           /* length of bulk argument in multi bulk request */
 295     list *reply;
 296     int sentlen;
 297     time_t lastinteraction; /* time of the last interaction, used for timeout */
 298     int flags;              /* REDIS_SLAVE | REDIS_MONITOR | REDIS_MULTI ... */
 299     int slaveseldb;         /* slave selected db, if this client is a slave */
 300     int authenticated;      /* when requirepass is non-NULL */
 301     int replstate;          /* replication state if this is a slave */
 302     int repldbfd;           /* replication DB file descriptor */
 303     long repldboff;         /* replication DB file offset */
 304     off_t repldbsize;       /* replication DB file size */
 305     multiState mstate;      /* MULTI/EXEC state */
 306     blockingState bpop;   /* blocking state */
 307     list *io_keys;          /* Keys this client is waiting to be loaded from the
 308                              * swap file in order to continue. */
 309     list *watched_keys;     /* Keys WATCHED for MULTI/EXEC CAS */
 310     dict *pubsub_channels;  /* channels a client is interested in (SUBSCRIBE) */
 311     list *pubsub_patterns;  /* patterns a client is interested in (SUBSCRIBE) */
 312
 313     /* Response buffer */
 314     int bufpos;
 315     char buf[REDIS_REPLY_CHUNK_BYTES];
 316 } redisClient;
 317
 318 struct saveparam {
 319     time_t seconds;
 320     int changes;
 321 };
 322
 323 struct sharedObjectsStruct {
 324     robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
 325     *colon, *nullbulk, *nullmultibulk, *queued,
 326     *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
 327     *outofrangeerr, *noscripterr, *loadingerr, *slowscripterr, *plus,
 328     *select0, *select1, *select2, *select3, *select4,
 329     *select5, *select6, *select7, *select8, *select9,
 330     *messagebulk, *pmessagebulk, *subscribebulk, *unsubscribebulk, *mbulk3,
 331     *mbulk4, *psubscribebulk, *punsubscribebulk,
 332     *integers[REDIS_SHARED_INTEGERS];
 333 };
 334
 335 /* ZSETs use a specialized version of Skiplists */
 336 typedef struct zskiplistNode {
 337     robj *obj;
 338     double score;
 339     struct zskiplistNode *backward;
 340     struct zskiplistLevel {
 341         struct zskiplistNode *forward;
 342         unsigned int span;
 343     } level[];
 344 } zskiplistNode;
 345
 346 typedef struct zskiplist {
 347     struct zskiplistNode *header, *tail;
 348     unsigned long length;
 349     int level;
 350 } zskiplist;
 351
 352 typedef struct zset {
 353     dict *dict;
 354     zskiplist *zsl;
 355 } zset;
 356
 357 /*-----------------------------------------------------------------------------
 358  * Redis cluster data structures
 359  *----------------------------------------------------------------------------*/
 360
 361 #define REDIS_CLUSTER_SLOTS 4096
 362 #define REDIS_CLUSTER_OK 0          /* Everything looks ok */
 363 #define REDIS_CLUSTER_FAIL 1        /* The cluster can't work */
 364 #define REDIS_CLUSTER_NEEDHELP 2    /* The cluster works, but needs some help */
 365 #define REDIS_CLUSTER_NAMELEN 40    /* sha1 hex length */
 366 #define REDIS_CLUSTER_PORT_INCR 10000 /* Cluster port = baseport + PORT_INCR */
 367
 368 struct clusterNode;
 369
 370 /* clusterLink encapsulates everything needed to talk with a remote node. */
 371 typedef struct clusterLink {
 372     int fd;                     /* TCP socket file descriptor */
 373     sds sndbuf;                 /* Packet send buffer */
 374     sds rcvbuf;                 /* Packet reception buffer */
 375     struct clusterNode *node;   /* Node related to this link if any, or NULL */
 376 } clusterLink;
 377
 378 /* Node flags */
 379 #define REDIS_NODE_MASTER 1     /* The node is a master */
 380 #define REDIS_NODE_SLAVE 2      /* The node is a slave */
 381 #define REDIS_NODE_PFAIL 4      /* Failure? Need acknowledge */
 382 #define REDIS_NODE_FAIL 8       /* The node is believed to be malfunctioning */
 383 #define REDIS_NODE_MYSELF 16    /* This node is myself */
 384 #define REDIS_NODE_HANDSHAKE 32 /* We have still to exchange the first ping */
 385 #define REDIS_NODE_NOADDR   64  /* We don't know the address of this node */
 386 #define REDIS_NODE_MEET 128     /* Send a MEET message to this node */
 387 #define REDIS_NODE_NULL_NAME "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
 388
 389 struct clusterNode {
 390     char name[REDIS_CLUSTER_NAMELEN]; /* Node name, hex string, sha1-size */
 391     int flags;      /* REDIS_NODE_... */
 392     unsigned char slots[REDIS_CLUSTER_SLOTS/8]; /* slots handled by this node */
 393     int numslaves;  /* Number of slave nodes, if this is a master */
 394     struct clusterNode **slaves; /* pointers to slave nodes */
 395     struct clusterNode *slaveof; /* pointer to the master node */
 396     time_t ping_sent;       /* Unix time we sent latest ping */
 397     time_t pong_received;   /* Unix time we received the pong */
 398     char *configdigest;         /* Configuration digest of this node */
 399     time_t configdigest_ts;     /* Configuration digest timestamp */
 400     char ip[16];                /* Latest known IP address of this node */
 401     int port;                   /* Latest known port of this node */
 402     clusterLink *link;          /* TCP/IP link with this node */
 403 };
 404 typedef struct clusterNode clusterNode;
 405
 406 typedef struct {
 407     char *configfile;
 408     clusterNode *myself;  /* This node */
 409     int state;            /* REDIS_CLUSTER_OK, REDIS_CLUSTER_FAIL, ... */
 410     int node_timeout;
 411     dict *nodes;          /* Hash table of name -> clusterNode structures */
 412     clusterNode *migrating_slots_to[REDIS_CLUSTER_SLOTS];
 413     clusterNode *importing_slots_from[REDIS_CLUSTER_SLOTS];
 414     clusterNode *slots[REDIS_CLUSTER_SLOTS];
 415     zskiplist *slots_to_keys;
 416 } clusterState;
 417
 418 /* Redis cluster messages header */
 419
 420 /* Note that the PING, PONG and MEET messages are actually the same exact
 421  * kind of packet. PONG is the reply to ping, in the extact format as a PING,
 422  * while MEET is a special PING that forces the receiver to add the sender
 423  * as a node (if it is not already in the list). */
 424 #define CLUSTERMSG_TYPE_PING 0          /* Ping */
 425 #define CLUSTERMSG_TYPE_PONG 1          /* Pong (reply to Ping) */
 426 #define CLUSTERMSG_TYPE_MEET 2          /* Meet "let's join" message */
 427 #define CLUSTERMSG_TYPE_FAIL 3          /* Mark node xxx as failing */
 428 #define CLUSTERMSG_TYPE_PUBLISH 4       /* Pub/Sub Publish propatagion */
 429
 430 /* Initially we don't know our "name", but we'll find it once we connect
 431  * to the first node, using the getsockname() function. Then we'll use this
 432  * address for all the next messages. */
 433 typedef struct {
 434     char nodename[REDIS_CLUSTER_NAMELEN];
 435     uint32_t ping_sent;
 436     uint32_t pong_received;
 437     char ip[16];    /* IP address last time it was seen */
 438     uint16_t port;  /* port last time it was seen */
 439     uint16_t flags;
 440     uint32_t notused; /* for 64 bit alignment */
 441 } clusterMsgDataGossip;
 442
 443 typedef struct {
 444     char nodename[REDIS_CLUSTER_NAMELEN];
 445 } clusterMsgDataFail;
 446
 447 typedef struct {
 448     uint32_t channel_len;
 449     uint32_t message_len;
 450     unsigned char bulk_data[8]; /* defined as 8 just for alignment concerns. */
 451 } clusterMsgDataPublish;
 452
 453 union clusterMsgData {
 454     /* PING, MEET and PONG */
 455     struct {
 456         /* Array of N clusterMsgDataGossip structures */
 457         clusterMsgDataGossip gossip[1];
 458     } ping;
 459
 460     /* FAIL */
 461     struct {
 462         clusterMsgDataFail about;
 463     } fail;
 464
 465     /* PUBLISH */
 466     struct {
 467         clusterMsgDataPublish msg;
 468     } publish;
 469 };
 470
 471 typedef struct {
 472     uint32_t totlen;    /* Total length of this message */
 473     uint16_t type;      /* Message type */
 474     uint16_t count;     /* Only used for some kind of messages. */
 475     char sender[REDIS_CLUSTER_NAMELEN]; /* Name of the sender node */
 476     unsigned char myslots[REDIS_CLUSTER_SLOTS/8];
 477     char slaveof[REDIS_CLUSTER_NAMELEN];
 478     char configdigest[32];
 479     uint16_t port;      /* Sender TCP base port */
 480     unsigned char state; /* Cluster state from the POV of the sender */
 481     unsigned char notused[5]; /* Reserved for future use. For alignment. */
 482     union clusterMsgData data;
 483 } clusterMsg;
 484
 485 /*-----------------------------------------------------------------------------
 486  * Global server state
 487  *----------------------------------------------------------------------------*/
 488
 489 struct redisServer {
 490     /* General */
 491     redisDb *db;
 492     dict *commands;             /* Command table hahs table */
 493     aeEventLoop *el;
 494     /* Networking */
 495     int port;
 496     char *bindaddr;
 497     char *unixsocket;
 498     mode_t unixsocketperm;
 499     int ipfd;
 500     int sofd;
 501     int cfd;
 502     list *clients;
 503     list *slaves, *monitors;
 504     char neterr[ANET_ERR_LEN];
 505     /* RDB / AOF loading information */
 506     int loading;
 507     off_t loading_total_bytes;
 508     off_t loading_loaded_bytes;
 509     time_t loading_start_time;
 510     /* Fast pointers to often looked up command */
 511     struct redisCommand *delCommand, *multiCommand;
 512     int cronloops;              /* number of times the cron function run */
 513     time_t lastsave;                /* Unix time of last save succeeede */
 514     /* Fields used only for stats */
 515     time_t stat_starttime;          /* server start time */
 516     long long stat_numcommands;     /* number of processed commands */
 517     long long stat_numconnections;  /* number of connections received */
 518     long long stat_expiredkeys;     /* number of expired keys */
 519     long long stat_evictedkeys;     /* number of evicted keys (maxmemory) */
 520     long long stat_keyspace_hits;   /* number of successful lookups of keys */
 521     long long stat_keyspace_misses; /* number of failed lookups of keys */
 522     size_t stat_peak_memory;        /* max used memory record */
 523     long long stat_fork_time;       /* time needed to perform latets fork() */
 524     list *slowlog;
 525     long long slowlog_entry_id;
 526     long long slowlog_log_slower_than;
 527     unsigned long slowlog_max_len;
 528     /* Configuration */
 529     int verbosity;
 530     int maxidletime;
 531     int dbnum;
 532     int daemonize;
 533     int appendonly;
 534     int appendfsync;
 535     int no_appendfsync_on_rewrite;
 536     int auto_aofrewrite_perc;       /* Rewrite AOF if % growth is > M and... */
 537     off_t auto_aofrewrite_min_size; /* the AOF file is at least N bytes. */
 538     off_t auto_aofrewrite_base_size;/* AOF size on latest startup or rewrite. */
 539     off_t appendonly_current_size;  /* AOF current size. */
 540     int aofrewrite_scheduled;       /* Rewrite once BGSAVE terminates. */
 541     int shutdown_asap;
 542     int activerehashing;
 543     char *requirepass;
 544     /* Persistence */
 545     long long dirty;            /* changes to DB from the last save */
 546     long long dirty_before_bgsave; /* used to restore dirty on failed BGSAVE */
 547     time_t lastfsync;
 548     int appendfd;
 549     int appendseldb;
 550     time_t aof_flush_postponed_start;
 551     char *pidfile;
 552     pid_t bgsavechildpid;
 553     pid_t bgrewritechildpid;
 554     sds bgrewritebuf; /* buffer taken by parent during oppend only rewrite */
 555     sds aofbuf;       /* AOF buffer, written before entering the event loop */
 556     struct saveparam *saveparams;
 557     int saveparamslen;
 558     char *dbfilename;
 559     int rdbcompression;
 560     char *appendfilename;
 561     /* Logging */
 562     char *logfile;
 563     int syslog_enabled;
 564     char *syslog_ident;
 565     int syslog_facility;
 566     /* Replication related */
 567     int isslave;
 568     /* Slave specific fields */
 569     char *masterauth;
 570     char *masterhost;
 571     int masterport;
 572     int repl_ping_slave_period;
 573     int repl_timeout;
 574     redisClient *master;    /* client that is master for this slave */
 575     int repl_syncio_timeout; /* timeout for synchronous I/O calls */
 576     int replstate;          /* replication status if the instance is a slave */
 577     off_t repl_transfer_left;  /* bytes left reading .rdb  */
 578     int repl_transfer_s;    /* slave -> master SYNC socket */
 579     int repl_transfer_fd;   /* slave -> master SYNC temp file descriptor */
 580     char *repl_transfer_tmpfile; /* slave-> master SYNC temp file name */
 581     time_t repl_transfer_lastio; /* unix time of the latest read, for timeout */
 582     int repl_serve_stale_data; /* Serve stale data when link is down? */
 583     time_t repl_down_since; /* unix time at which link with master went down */
 584     /* Limits */
 585     unsigned int maxclients;
 586     unsigned long long maxmemory;
 587     int maxmemory_policy;
 588     int maxmemory_samples;
 589     /* Blocked clients */
 590     unsigned int bpop_blocked_clients;
 591     list *unblocked_clients; /* list of clients to unblock before next loop */
 592     /* Sort parameters - qsort_r() is only available under BSD so we
 593      * have to take this state global, in order to pass it to sortCompare() */
 594     int sort_desc;
 595     int sort_alpha;
 596     int sort_bypattern;
 597     /* Zip structure config */
 598     size_t hash_max_zipmap_entries;
 599     size_t hash_max_zipmap_value;
 600     size_t list_max_ziplist_entries;
 601     size_t list_max_ziplist_value;
 602     size_t set_max_intset_entries;
 603     size_t zset_max_ziplist_entries;
 604     size_t zset_max_ziplist_value;
 605     time_t unixtime;    /* Unix time sampled every second. */
 606     /* Pubsub */
 607     dict *pubsub_channels; /* Map channels to list of subscribed clients */
 608     list *pubsub_patterns; /* A list of pubsub_patterns */
 609     /* Misc */
 610     unsigned lruclock:22;        /* clock incrementing every minute, for LRU */
 611     unsigned lruclock_padding:10;
 612     /* Cluster */
 613     int cluster_enabled;
 614     clusterState cluster;
 615     /* Scripting */
 616     lua_State *lua; /* The Lua interpreter. We use just one for all clients */
 617     redisClient *lua_client; /* The "fake client" to query Redis from Lua */
 618     dict *lua_scripts; /* A dictionary of SHA1 -> Lua scripts */
 619     long long lua_time_limit;
 620     long long lua_time_start;
 621     int lua_random_dirty; /* True if a random command was called during the
 622                              exection of the current script. */
 623     int lua_timedout;     /* True if we reached the time limit for script
 624                              execution. */
 625 };
 626
 627 typedef struct pubsubPattern {
 628     redisClient *client;
 629     robj *pattern;
 630 } pubsubPattern;
 631
 632 typedef void redisCommandProc(redisClient *c);
 633 typedef int *redisGetKeysProc(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
 634 struct redisCommand {
 635     char *name;
 636     redisCommandProc *proc;
 637     int arity;
 638     char *sflags; /* Flags as string represenation, one char per flag. */
 639     int flags;    /* The actual flags, obtained from the 'sflags' field. */
 640     /* Use a function to determine keys arguments in a command line.
 641      * Used for Redis Cluster redirect. */
 642     redisGetKeysProc *getkeys_proc;
 643     /* What keys should be loaded in background when calling this command? */
 644     int firstkey; /* The first argument that's a key (0 = no keys) */
 645     int lastkey;  /* THe last argument that's a key */
 646     int keystep;  /* The step between first and last key */
 647     long long microseconds, calls;
 648 };
 649
 650 struct redisFunctionSym {
 651     char *name;
 652     unsigned long pointer;
 653 };
 654
 655 typedef struct _redisSortObject {
 656     robj *obj;
 657     union {
 658         double score;
 659         robj *cmpobj;
 660     } u;
 661 } redisSortObject;
 662
 663 typedef struct _redisSortOperation {
 664     int type;
 665     robj *pattern;
 666 } redisSortOperation;
 667
 668 /* Structure to hold list iteration abstraction. */
 669 typedef struct {
 670     robj *subject;
 671     unsigned char encoding;
 672     unsigned char direction; /* Iteration direction */
 673     unsigned char *zi;
 674     listNode *ln;
 675 } listTypeIterator;
 676
 677 /* Structure for an entry while iterating over a list. */
 678 typedef struct {
 679     listTypeIterator *li;
 680     unsigned char *zi;  /* Entry in ziplist */
 681     listNode *ln;       /* Entry in linked list */
 682 } listTypeEntry;
 683
 684 /* Structure to hold set iteration abstraction. */
 685 typedef struct {
 686     robj *subject;
 687     int encoding;
 688     int ii; /* intset iterator */
 689     dictIterator *di;
 690 } setTypeIterator;
 691
 692 /* Structure to hold hash iteration abstration. Note that iteration over
 693  * hashes involves both fields and values. Because it is possible that
 694  * not both are required, store pointers in the iterator to avoid
 695  * unnecessary memory allocation for fields/values. */
 696 typedef struct {
 697     int encoding;
 698     unsigned char *zi;
 699     unsigned char *zk, *zv;
 700     unsigned int zklen, zvlen;
 701
 702     dictIterator *di;
 703     dictEntry *de;
 704 } hashTypeIterator;
 705
 706 #define REDIS_HASH_KEY 1
 707 #define REDIS_HASH_VALUE 2
 708
 709 /*-----------------------------------------------------------------------------
 710  * Extern declarations
 711  *----------------------------------------------------------------------------*/
 712
 713 extern struct redisServer server;
 714 extern struct sharedObjectsStruct shared;
 715 extern dictType setDictType;
 716 extern dictType zsetDictType;
 717 extern dictType clusterNodesDictType;
 718 extern dictType dbDictType;
 719 extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
 720 dictType hashDictType;
 721
 722 /*-----------------------------------------------------------------------------
 723  * Functions prototypes
 724  *----------------------------------------------------------------------------*/
 725
 726 /* Utils */
 727 long long ustime(void);
 728 long long mstime(void);
 729
 730 /* networking.c -- Networking and Client related operations */
 731 redisClient *createClient(int fd);
 732 void closeTimedoutClients(void);
 733 void freeClient(redisClient *c);
 734 void resetClient(redisClient *c);
 735 void sendReplyToClient(aeEventLoop *el, int fd, void *privdata, int mask);
 736 void addReply(redisClient *c, robj *obj);
 737 void *addDeferredMultiBulkLength(redisClient *c);
 738 void setDeferredMultiBulkLength(redisClient *c, void *node, long length);
 739 void addReplySds(redisClient *c, sds s);
 740 void processInputBuffer(redisClient *c);
 741 void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 742 void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 743 void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
 744 void addReplyBulk(redisClient *c, robj *obj);
 745 void addReplyBulkCString(redisClient *c, char *s);
 746 void addReplyBulkCBuffer(redisClient *c, void *p, size_t len);
 747 void addReplyBulkLongLong(redisClient *c, long long ll);
 748 void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 749 void addReply(redisClient *c, robj *obj);
 750 void addReplySds(redisClient *c, sds s);
 751 void addReplyError(redisClient *c, char *err);
 752 void addReplyStatus(redisClient *c, char *status);
 753 void addReplyDouble(redisClient *c, double d);
 754 void addReplyLongLong(redisClient *c, long long ll);
 755 void addReplyMultiBulkLen(redisClient *c, long length);
 756 void *dupClientReplyValue(void *o);
 757 void getClientsMaxBuffers(unsigned long *longest_output_list,
 758                           unsigned long *biggest_input_buffer);
 759 void rewriteClientCommandVector(redisClient *c, int argc, ...);
 760 void rewriteClientCommandArgument(redisClient *c, int i, robj *newval);
 761
 762 #ifdef __GNUC__
 763 void addReplyErrorFormat(redisClient *c, const char *fmt, ...)
 764     __attribute__((format(printf, 2, 3)));
 765 void addReplyStatusFormat(redisClient *c, const char *fmt, ...)
 766     __attribute__((format(printf, 2, 3)));
 767 #else
 768 void addReplyErrorFormat(redisClient *c, const char *fmt, ...);
 769 void addReplyStatusFormat(redisClient *c, const char *fmt, ...);
 770 #endif
 771
 772 /* List data type */
 773 void listTypeTryConversion(robj *subject, robj *value);
 774 void listTypePush(robj *subject, robj *value, int where);
 775 robj *listTypePop(robj *subject, int where);
 776 unsigned long listTypeLength(robj *subject);
 777 listTypeIterator *listTypeInitIterator(robj *subject, int index, unsigned char direction);
 778 void listTypeReleaseIterator(listTypeIterator *li);
 779 int listTypeNext(listTypeIterator *li, listTypeEntry *entry);
 780 robj *listTypeGet(listTypeEntry *entry);
 781 void listTypeInsert(listTypeEntry *entry, robj *value, int where);
 782 int listTypeEqual(listTypeEntry *entry, robj *o);
 783 void listTypeDelete(listTypeEntry *entry);
 784 void listTypeConvert(robj *subject, int enc);
 785 void unblockClientWaitingData(redisClient *c);
 786 int handleClientsWaitingListPush(redisClient *c, robj *key, robj *ele);
 787 void popGenericCommand(redisClient *c, int where);
 788
 789 /* MULTI/EXEC/WATCH... */
 790 void unwatchAllKeys(redisClient *c);
 791 void initClientMultiState(redisClient *c);
 792 void freeClientMultiState(redisClient *c);
 793 void queueMultiCommand(redisClient *c);
 794 void touchWatchedKey(redisDb *db, robj *key);
 795 void touchWatchedKeysOnFlush(int dbid);
 796
 797 /* Redis object implementation */
 798 void decrRefCount(void *o);
 799 void incrRefCount(robj *o);
 800 robj *resetRefCount(robj *obj);
 801 void freeStringObject(robj *o);
 802 void freeListObject(robj *o);
 803 void freeSetObject(robj *o);
 804 void freeZsetObject(robj *o);
 805 void freeHashObject(robj *o);
 806 robj *createObject(int type, void *ptr);
 807 robj *createStringObject(char *ptr, size_t len);
 808 robj *dupStringObject(robj *o);
 809 int isObjectRepresentableAsLongLong(robj *o, long long *llongval);
 810 robj *tryObjectEncoding(robj *o);
 811 robj *getDecodedObject(robj *o);
 812 size_t stringObjectLen(robj *o);
 813 robj *createStringObjectFromLongLong(long long value);
 814 robj *createStringObjectFromLongDouble(long double value);
 815 robj *createListObject(void);
 816 robj *createZiplistObject(void);
 817 robj *createSetObject(void);
 818 robj *createIntsetObject(void);
 819 robj *createHashObject(void);
 820 robj *createZsetObject(void);
 821 robj *createZsetZiplistObject(void);
 822 int getLongFromObjectOrReply(redisClient *c, robj *o, long *target, const char *msg);
 823 int checkType(redisClient *c, robj *o, int type);
 824 int getLongLongFromObjectOrReply(redisClient *c, robj *o, long long *target, const char *msg);
 825 int getDoubleFromObjectOrReply(redisClient *c, robj *o, double *target, const char *msg);
 826 int getLongLongFromObject(robj *o, long long *target);
 827 int getLongDoubleFromObject(robj *o, long double *target);
 828 int getLongDoubleFromObjectOrReply(redisClient *c, robj *o, long double *target, const char *msg);
 829 char *strEncoding(int encoding);
 830 int compareStringObjects(robj *a, robj *b);
 831 int equalStringObjects(robj *a, robj *b);
 832 unsigned long estimateObjectIdleTime(robj *o);
 833
 834 /* Synchronous I/O with timeout */
 835 int syncWrite(int fd, char *ptr, ssize_t size, int timeout);
 836 int syncRead(int fd, char *ptr, ssize_t size, int timeout);
 837 int syncReadLine(int fd, char *ptr, ssize_t size, int timeout);
 838
 839 /* Replication */
 840 void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc);
 841 void replicationFeedMonitors(list *monitors, int dictid, robj **argv, int argc);
 842 void updateSlavesWaitingBgsave(int bgsaveerr);
 843 void replicationCron(void);
 844
 845 /* Generic persistence functions */
 846 void startLoading(FILE *fp);
 847 void loadingProgress(off_t pos);
 848 void stopLoading(void);
 849
 850 /* RDB persistence */
 851 #include "rdb.h"
 852
 853 /* AOF persistence */
 854 void flushAppendOnlyFile(int force);
 855 void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv, int argc);
 856 void aofRemoveTempFile(pid_t childpid);
 857 int rewriteAppendOnlyFileBackground(void);
 858 int loadAppendOnlyFile(char *filename);
 859 void stopAppendOnly(void);
 860 int startAppendOnly(void);
 861 void backgroundRewriteDoneHandler(int exitcode, int bysignal);
 862
 863 /* Sorted sets data type */
 864
 865 /* Struct to hold a inclusive/exclusive range spec. */
 866 typedef struct {
 867     double min, max;
 868     int minex, maxex; /* are min or max exclusive? */
 869 } zrangespec;
 870
 871 zskiplist *zslCreate(void);
 872 void zslFree(zskiplist *zsl);
 873 zskiplistNode *zslInsert(zskiplist *zsl, double score, robj *obj);
 874 unsigned char *zzlInsert(unsigned char *zl, robj *ele, double score);
 875 int zslDelete(zskiplist *zsl, double score, robj *obj);
 876 zskiplistNode *zslFirstInRange(zskiplist *zsl, zrangespec range);
 877 double zzlGetScore(unsigned char *sptr);
 878 void zzlNext(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
 879 void zzlPrev(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
 880 unsigned int zsetLength(robj *zobj);
 881 void zsetConvert(robj *zobj, int encoding);
 882
 883 /* Core functions */
 884 void freeMemoryIfNeeded(void);
 885 int processCommand(redisClient *c);
 886 void setupSignalHandlers(void);
 887 struct redisCommand *lookupCommand(sds name);
 888 struct redisCommand *lookupCommandByCString(char *s);
 889 void call(redisClient *c);
 890 int prepareForShutdown();
 891 void redisLog(int level, const char *fmt, ...);
 892 void redisLogRaw(int level, const char *msg);
 893 void usage();
 894 void updateDictResizePolicy(void);
 895 int htNeedsResize(dict *dict);
 896 void oom(const char *msg);
 897 void populateCommandTable(void);
 898 void resetCommandTableStats(void);
 899
 900 /* Set data type */
 901 robj *setTypeCreate(robj *value);
 902 int setTypeAdd(robj *subject, robj *value);
 903 int setTypeRemove(robj *subject, robj *value);
 904 int setTypeIsMember(robj *subject, robj *value);
 905 setTypeIterator *setTypeInitIterator(robj *subject);
 906 void setTypeReleaseIterator(setTypeIterator *si);
 907 int setTypeNext(setTypeIterator *si, robj **objele, int64_t *llele);
 908 robj *setTypeNextObject(setTypeIterator *si);
 909 int setTypeRandomElement(robj *setobj, robj **objele, int64_t *llele);
 910 unsigned long setTypeSize(robj *subject);
 911 void setTypeConvert(robj *subject, int enc);
 912
 913 /* Hash data type */
 914 void convertToRealHash(robj *o);
 915 void hashTypeTryConversion(robj *subject, robj **argv, int start, int end);
 916 void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2);
 917 int hashTypeGet(robj *o, robj *key, robj **objval, unsigned char **v, unsigned int *vlen);
 918 robj *hashTypeGetObject(robj *o, robj *key);
 919 int hashTypeExists(robj *o, robj *key);
 920 int hashTypeSet(robj *o, robj *key, robj *value);
 921 int hashTypeDelete(robj *o, robj *key);
 922 unsigned long hashTypeLength(robj *o);
 923 hashTypeIterator *hashTypeInitIterator(robj *subject);
 924 void hashTypeReleaseIterator(hashTypeIterator *hi);
 925 int hashTypeNext(hashTypeIterator *hi);
 926 int hashTypeCurrent(hashTypeIterator *hi, int what, robj **objval, unsigned char **v, unsigned int *vlen);
 927 robj *hashTypeCurrentObject(hashTypeIterator *hi, int what);
 928 robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key);
 929
 930 /* Pub / Sub */
 931 int pubsubUnsubscribeAllChannels(redisClient *c, int notify);
 932 int pubsubUnsubscribeAllPatterns(redisClient *c, int notify);
 933 void freePubsubPattern(void *p);
 934 int listMatchPubsubPattern(void *a, void *b);
 935 int pubsubPublishMessage(robj *channel, robj *message);
 936
 937 /* Configuration */
 938 void loadServerConfig(char *filename);
 939 void appendServerSaveParams(time_t seconds, int changes);
 940 void resetServerSaveParams();
 941
 942 /* db.c -- Keyspace access API */
 943 int removeExpire(redisDb *db, robj *key);
 944 void propagateExpire(redisDb *db, robj *key);
 945 int expireIfNeeded(redisDb *db, robj *key);
 946 long long getExpire(redisDb *db, robj *key);
 947 void setExpire(redisDb *db, robj *key, long long when);
 948 robj *lookupKey(redisDb *db, robj *key);
 949 robj *lookupKeyRead(redisDb *db, robj *key);
 950 robj *lookupKeyWrite(redisDb *db, robj *key);
 951 robj *lookupKeyReadOrReply(redisClient *c, robj *key, robj *reply);
 952 robj *lookupKeyWriteOrReply(redisClient *c, robj *key, robj *reply);
 953 void dbAdd(redisDb *db, robj *key, robj *val);
 954 void dbOverwrite(redisDb *db, robj *key, robj *val);
 955 void setKey(redisDb *db, robj *key, robj *val);
 956 int dbExists(redisDb *db, robj *key);
 957 robj *dbRandomKey(redisDb *db);
 958 int dbDelete(redisDb *db, robj *key);
 959 long long emptyDb();
 960 int selectDb(redisClient *c, int id);
 961 void signalModifiedKey(redisDb *db, robj *key);
 962 void signalFlushedDb(int dbid);
 963 unsigned int GetKeysInSlot(unsigned int hashslot, robj **keys, unsigned int count);
 964
 965 /* API to get key arguments from commands */
 966 #define REDIS_GETKEYS_ALL 0
 967 #define REDIS_GETKEYS_PRELOAD 1
 968 int *getKeysFromCommand(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
 969 void getKeysFreeResult(int *result);
 970 int *noPreloadGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 971 int *renameGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 972 int *zunionInterGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 973
 974 /* Cluster */
 975 void clusterInit(void);
 976 unsigned short crc16(const char *buf, int len);
 977 unsigned int keyHashSlot(char *key, int keylen);
 978 clusterNode *createClusterNode(char *nodename, int flags);
 979 int clusterAddNode(clusterNode *node);
 980 void clusterCron(void);
 981 clusterNode *getNodeByQuery(redisClient *c, struct redisCommand *cmd, robj **argv, int argc, int *hashslot, int *ask);
 982 void clusterPropagatePublish(robj *channel, robj *message);
 983
 984 /* Scripting */
 985 void scriptingInit(void);
 986
 987 /* Git SHA1 */
 988 char *redisGitSHA1(void);
 989 char *redisGitDirty(void);
 990
 991 /* Commands prototypes */
 992 void authCommand(redisClient *c);
 993 void pingCommand(redisClient *c);
 994 void echoCommand(redisClient *c);
 995 void setCommand(redisClient *c);
 996 void setnxCommand(redisClient *c);
 997 void setexCommand(redisClient *c);
 998 void psetexCommand(redisClient *c);
 999 void getCommand(redisClient *c);
1000 void delCommand(redisClient *c);
1001 void existsCommand(redisClient *c);
1002 void setbitCommand(redisClient *c);
1003 void getbitCommand(redisClient *c);
1004 void setrangeCommand(redisClient *c);
1005 void getrangeCommand(redisClient *c);
1006 void incrCommand(redisClient *c);
1007 void decrCommand(redisClient *c);
1008 void incrbyCommand(redisClient *c);
1009 void decrbyCommand(redisClient *c);
1010 void incrbyfloatCommand(redisClient *c);
1011 void selectCommand(redisClient *c);
1012 void randomkeyCommand(redisClient *c);
1013 void keysCommand(redisClient *c);
1014 void dbsizeCommand(redisClient *c);
1015 void lastsaveCommand(redisClient *c);
1016 void saveCommand(redisClient *c);
1017 void bgsaveCommand(redisClient *c);
1018 void bgrewriteaofCommand(redisClient *c);
1019 void shutdownCommand(redisClient *c);
1020 void moveCommand(redisClient *c);
1021 void renameCommand(redisClient *c);
1022 void renamenxCommand(redisClient *c);
1023 void lpushCommand(redisClient *c);
1024 void rpushCommand(redisClient *c);
1025 void lpushxCommand(redisClient *c);
1026 void rpushxCommand(redisClient *c);
1027 void linsertCommand(redisClient *c);
1028 void lpopCommand(redisClient *c);
1029 void rpopCommand(redisClient *c);
1030 void llenCommand(redisClient *c);
1031 void lindexCommand(redisClient *c);
1032 void lrangeCommand(redisClient *c);
1033 void ltrimCommand(redisClient *c);
1034 void typeCommand(redisClient *c);
1035 void lsetCommand(redisClient *c);
1036 void saddCommand(redisClient *c);
1037 void sremCommand(redisClient *c);
1038 void smoveCommand(redisClient *c);
1039 void sismemberCommand(redisClient *c);
1040 void scardCommand(redisClient *c);
1041 void spopCommand(redisClient *c);
1042 void srandmemberCommand(redisClient *c);
1043 void sinterCommand(redisClient *c);
1044 void sinterstoreCommand(redisClient *c);
1045 void sunionCommand(redisClient *c);
1046 void sunionstoreCommand(redisClient *c);
1047 void sdiffCommand(redisClient *c);
1048 void sdiffstoreCommand(redisClient *c);
1049 void syncCommand(redisClient *c);
1050 void flushdbCommand(redisClient *c);
1051 void flushallCommand(redisClient *c);
1052 void sortCommand(redisClient *c);
1053 void lremCommand(redisClient *c);
1054 void rpoplpushCommand(redisClient *c);
1055 void infoCommand(redisClient *c);
1056 void mgetCommand(redisClient *c);
1057 void monitorCommand(redisClient *c);
1058 void expireCommand(redisClient *c);
1059 void expireatCommand(redisClient *c);
1060 void pexpireCommand(redisClient *c);
1061 void pexpireatCommand(redisClient *c);
1062 void getsetCommand(redisClient *c);
1063 void ttlCommand(redisClient *c);
1064 void pttlCommand(redisClient *c);
1065 void persistCommand(redisClient *c);
1066 void slaveofCommand(redisClient *c);
1067 void debugCommand(redisClient *c);
1068 void msetCommand(redisClient *c);
1069 void msetnxCommand(redisClient *c);
1070 void zaddCommand(redisClient *c);
1071 void zincrbyCommand(redisClient *c);
1072 void zrangeCommand(redisClient *c);
1073 void zrangebyscoreCommand(redisClient *c);
1074 void zrevrangebyscoreCommand(redisClient *c);
1075 void zcountCommand(redisClient *c);
1076 void zrevrangeCommand(redisClient *c);
1077 void zcardCommand(redisClient *c);
1078 void zremCommand(redisClient *c);
1079 void zscoreCommand(redisClient *c);
1080 void zremrangebyscoreCommand(redisClient *c);
1081 void multiCommand(redisClient *c);
1082 void execCommand(redisClient *c);
1083 void discardCommand(redisClient *c);
1084 void blpopCommand(redisClient *c);
1085 void brpopCommand(redisClient *c);
1086 void brpoplpushCommand(redisClient *c);
1087 void appendCommand(redisClient *c);
1088 void strlenCommand(redisClient *c);
1089 void zrankCommand(redisClient *c);
1090 void zrevrankCommand(redisClient *c);
1091 void hsetCommand(redisClient *c);
1092 void hsetnxCommand(redisClient *c);
1093 void hgetCommand(redisClient *c);
1094 void hmsetCommand(redisClient *c);
1095 void hmgetCommand(redisClient *c);
1096 void hdelCommand(redisClient *c);
1097 void hlenCommand(redisClient *c);
1098 void zremrangebyrankCommand(redisClient *c);
1099 void zunionstoreCommand(redisClient *c);
1100 void zinterstoreCommand(redisClient *c);
1101 void hkeysCommand(redisClient *c);
1102 void hvalsCommand(redisClient *c);
1103 void hgetallCommand(redisClient *c);
1104 void hexistsCommand(redisClient *c);
1105 void configCommand(redisClient *c);
1106 void hincrbyCommand(redisClient *c);
1107 void hincrbyfloatCommand(redisClient *c);
1108 void subscribeCommand(redisClient *c);
1109 void unsubscribeCommand(redisClient *c);
1110 void psubscribeCommand(redisClient *c);
1111 void punsubscribeCommand(redisClient *c);
1112 void publishCommand(redisClient *c);
1113 void watchCommand(redisClient *c);
1114 void unwatchCommand(redisClient *c);
1115 void clusterCommand(redisClient *c);
1116 void restoreCommand(redisClient *c);
1117 void migrateCommand(redisClient *c);
1118 void askingCommand(redisClient *c);
1119 void dumpCommand(redisClient *c);
1120 void objectCommand(redisClient *c);
1121 void clientCommand(redisClient *c);
1122 void evalCommand(redisClient *c);
1123 void evalShaCommand(redisClient *c);
1124 void scriptCommand(redisClient *c);
1125
1126 #if defined(__GNUC__)
1127 void *calloc(size_t count, size_t size) __attribute__ ((deprecated));
1128 void free(void *ptr) __attribute__ ((deprecated));
1129 void *malloc(size_t size) __attribute__ ((deprecated));
1130 void *realloc(void *ptr, size_t size) __attribute__ ((deprecated));
1131 #endif
1132
1133 /* Debugging stuff */
1134 void _redisAssertWithInfo(redisClient *c, robj *o, char *estr, char *file, int line);
1135 void _redisAssert(char *estr, char *file, int line);
1136 void _redisPanic(char *msg, char *file, int line);
1137
1138 #endif